StartScreenShake(How much it should shake... just test some, How long it should shake, how much time till shaking on full power, How much time till from full power shaking to 0);
the first thing "How much it should shake... just test some" for cave in I prefer 2.
For some room shaking make it just 0.5f to 1.0f max.

And I get this error "FATAL ERROR: Could no tload script file 'custom_stories/.../maps/nms1.hps'!. Main (203, 1): ERR : No matching signatures to 'StartScreenShake(string@&, string@&, string@&, string@&)'"

And I get this error "FATAL ERROR: Could no tload script file 'custom_stories/.../maps/nms1.hps'!. Main (203, 1): ERR : No matching signatures to 'StartScreenShake(string@&, string@&, string@&, string@&)'"

Btw, thanks for helping me

Don't put the numbers in quotation marks, as that is passing in a string of the digits, as opposed to numbers which the function expects.